Profibus-evolution

www.abb.com/fieldbus

© 2008-04 V03 ABB Automation Products GmbH 3KXN600001R5801_Presentation_Fieldbus_Evolution_G001.ppt

Fieldbus Evolution The way from 4..20 to Fieldbus.

Fieldbus Evolution

Contents

This session covers:

„ Overview „ 4..20 mA Technology „ HART „ Wireless HART „ PROFIBUS „ PROFINET „ FOUNDATION Fieldbus „ IndustrialIT „ Fieldbus benefits

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Fieldbus Evolution

Overview Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Growing capabilities. The way from pure measurement to Plant- and Asset-Management.

today 2000 1999 1989

4..20 mA

1980

1950 © 2008-04 V03 ABB Automation Products GmbH - 3

Fieldbus Evolution

4..20 mA analog technology Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Analog electrical transmission standard for industrial instrumentation and communication.

„

Current loop for signal transmission. „ Supply of the devices over the wire. „ Two wire cabling. Connection of each device with I/O cards.

I/O Cards

Field devices

4..20 mA © 2008-04 V03 ABB Automation Products GmbH - 4

Fieldbus Evolution

Analog / Digital communication Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

What are the differences between analog and digital communication in the process automation. analog • Transmission of just one process value (value of current) • Recognizing of physical errors (like line break) possible

digital • More than one process value can be transmitted • Additional status information with each variable • Additional Asset Management data can be transmitted • High resolution of measured value

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Fieldbus Evolution

Communication Protocol Layer model Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Digital communication protocols have standardized structures according to the OSI Layer model (Open Systems Interconnection reference model)

7

Application Layer

6

Presentation Layer

5

Session Layer

4

Transport Layer

3

Network Layer

2

Data Link Layer

1

Physical Layer

Command level, application access to the protocol data and commands

Not used in automation communication protocols except in Industrial Ethernet (TCP/IP, UDP protocols) or used Wireless standards like IEEE 802.11

Physical addressing priciples, frame building, media access control specification of cables, current and voltage, topologies, coding algorithms, data rate

OSI model for interoperability. © 2008-04 V03 ABB Automation Products GmbH - 6

Fieldbus Evolution

Communication Protocol Layer model Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

interpreting Command + Data

creating Command + Data

physical

medium

transmission

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Fieldbus Evolution

HART (Highway Addressable Transducer Protocol) Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Analog transmission with overlayed additional digital informations.

„

„ „ „ „ „

Allows transmission of more than one process information plus bidirectional communication capabilities in addition to 4..20 mA process value. Master station polls all slaves (cyclic communication). Multidrop mode allows bus topologies (otherwise Point-to-Point connection of devices). Digital signal is overlayed on the loop current using Frequency-Shift-Keying. FDT/DTM enabled + EDD enabled. 1.2 kBit/s Remote I/0 or Multiplexer

Field devices

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Fieldbus Evolution

WirelessHART Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Wireless standard for the HART protocol.

„ „

„ „ „

Allows HART diagnosis and maintenance without wired connection to the device. Basing on IEEE 802.15.4 Standard (Low Rate Wireless Personal Area Network - 2003) -> guarantees long battery life (months up to years) Uses HART command structures HART infrastructure can be reused FDT/DTM enabled + EDD enabled

Gateway / Multiplexer monitoring / maintenance

Field devices

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Fieldbus Evolution

PROFIBUS (Process Field Bus) Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Digital transmission protocol covering layer 1, 2, and 7 of the OSI model. „ „ „ „ „ „ „

Basis is PROFIBUS DP communication technology. DP-V0 for cyclic (non deterministic), DP-V1 for acyclic communication and DP-V2 for inter device communication. Master / Slave communication, „Report distribution“ for Alarms and Events Implements Application profiles: PA Profile, HART on DP, … . Block principle (Function Blocks, Transducer Blocks, physical Blocks) 31.25 kBit/s on MBP side to 12 MBit/s on DP side. FDT/DTM enabled + EDD enabled.

Master DP

Linking device PA (MBP)

Field devices © 2008-04 V03 ABB Automation Products GmbH - 10

Fieldbus Evolution

PROFINET (Process Field Network) Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Ethernet based communication standard, using the PROFIBUS DP transmission principles. „ „ „ „ „

Basis is PROFIBUS DP communication technology (command structure). Data Link Layer is Industrial Ethernet, Application Layer is PROFIBUS DP. Wireless communication according to the IEEE 802.11 is possible. Inter fieldbus communication via proxy servers FDT/DTM enabled + EDD enabled. PROFINET Proxy

Proxy PROFIBUS

Fieldbus

Field devices © 2008-04 V03 ABB Automation Products GmbH - 11

Fieldbus Evolution

FOUNDATION Fieldbus Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Deterministic digital transmission protocol covering layer 1, 2, and 7 of the OSI model. „ „ „ „ „

HSE (High Speed Ethernet, up to 100 MBit/s, Wireless communication according to the IEEE 802.11 is possible) and H1 (31.25 kBit/s) is available. Publisher/ Subscriber for cyclic (deterministic) and Client/ Server model for acyclic communication plus „Report distribution“ for Alarms and Events or Trends. Block principle (Function Blocks, Transducer Blocks, Resource Blocks). Communication between Device-Function-Blocks (control in the field). FDT/DTM enabled + EDD enabled.

HSE

Linking device LAS

H1(MBP) Field devices

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Fieldbus Evolution

IndustrialIT Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Powerful and coordinated with each other ABB Service Product Portfolio to rule your plant. Plant Automation, Asset Optimization and collaborative business processes combined in the 800xA System, using the ABB Apect Object Technology. Everything can be done in real time within a single system.

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Fieldbus Evolution

Fieldbus benefits Overview 4..20 mA HART Wireless HART PROFIBUS PROFINET FOUNDATION Fieldbus IndustrialIT Fieldbus benefits

Reduced wiring, and therefore, ease of engineering and installation Communication faults can be located from the control room Instrument settings can be downloaded from the control room High resolution of the measured value The original signal is not altered by analog/digital conversion Communication of measurement value and device status from field instruments to DCS Plausibility checks confirm the quality of the signal Diagnostic information for predictive maintenance; maintenance is performed only when scheduled or required

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Fieldbus Evolution

Conclusion

ABB makes the difference…

1010 0101

Freedom

Power

Reliability

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Fieldbus Evolution

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